1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 112 speaker to permanent magnet
dirkbuddy
Junior Member
**
Posts: 39
Threads: 8
Joined: Feb 2014
City: Medicine Hat, Alberta canada
#11

03-24-2018, 07:49 AM
Thanks for the replies folks, I'm going to tackle removing the cone as per Radioroslyn suggestion when I have time here.  But getting back to my original question and the first post with my attached drawn up schematic,  IF i had to replace the speaker, say with a PM speaker, Would I have to A) Change the output transformer to one that will be able to drive a 6 ohm PM?  B) Replace the field coil with a 3.2 K resistor? If so what wattage?
C) Increase the 2nd Electro cap from 6uf to 12 uf?  D) Do I have to do anything with the filter choke?    am I on the right track here ?
Find
« Next Oldest | Next Newest »


Messages In This Thread
RE: Philco 112 speaker to permanent magnet - by dirkbuddy - 03-24-2018, 07:49 AM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM
Hickok AC51 tube tester
Absolutely no one is going to reverse engineer that circuit. Even the iron core is missing.RodB — 10:37 AM
IF can wire size and Rubber mounts?
Thanks to both members for your help regarding wire and tuner mtg supports. regards--Johngeorgetownjohn — 09:33 AM
Hickok AC51 tube tester
Note that no power cord, power switch, or power transformer switch are shown. That (along with my experience with full s...DaleHCook — 07:09 AM
IF can wire size and Rubber mounts?
A pair of wire strippers can give you an idea of what the existing gauge of the wire leads are in the IF can, I think it...Arran — 06:07 AM
My last cabinet for this year
Hello Dan, That is really beautiful what great looking radio you have ! I have friends who live in Calgary and the wea...radiorich — 01:51 AM

[-]
Who's Online
There are currently no members online.

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration